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Finding the Fourth Proportional to 13,954.70, 20,925.45 and 8,113.10

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Solution

The fourth proportional to 13,954.70, 20,925.45 and 8,113.10 is: 12,165.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.70 : 20,925.45 = 8,113.10 : x
  2. Step 2: Convert to fraction form
    13,954.70/20,925.45 = 8,113.10/x
  3. Step 3: Cross multiply
    13,954.70x = 20,925.45 × 8,113.10
  4. Step 4: Simplify right side
    13,954.70x = 169,770,268.40
  5. Step 5: Solve for x
    x = 169,770,268.40/13,954.70
  6. Step 6: Final answer
    x = 12,165.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.